NEET MDS Shorts
53389
Dental Anatomy
The primary teeth begin to form in utero at about six weeks. Hard tissue
formation occurs in all primary teeth by the 18th week in utero. 3. The
permanent teeth begin to develop at approximately four months of age in utero.
Maxillary and mandibular first molars begin to calcify at birth.
64908
Dental AnatomyThe primary mandibular central incisors usually erupt at 6-8 months
37480
Dental AnatomyThe canine eminence is an osseous structure surrounding the root of a canine on the facial aspect
17769
Dental AnatomyAfet tooth eruption in permanent teeth the apex is fully developed after 2-3 years
43886
Dental Anatomy
Interglobular Dentin:
Sometimes, mineralization of dentin begins in small globular areas that fail to coalesce into a homogenous mass. This results in zones of hypomineralization between the globules.
These zones are known as globular dentin or interglobular spaces. Thus, demonstrating defect of mineralization and not of matrix formation, the dentinal tubules pass uninterruptedly through interglobular dentin.
26802
Dental AnatomyThe largest and longest root canal of the maxillary second molar is the lingual
13282
Dental AnatomyA tooth makes its appearance in the oral cavity usually when one half of the root is completed
73875
Dental AnatomyThe most constant and valuable trait to differentiate among maxillary first second and third molars is the depth of central fossae
10279
Dental Anatomy
Maxillary lateral incisor agenesis:
This is the most common congenital absence of a permanent tooth in the maxillary
anterior region, accounting for about 20% of all dental anomalies.
Coronal developmental invagination (DI):This is a common anomaly in the
permanent maxillary lateral incisor, usually appearing as an accentuation of the
lingual pit.It's often bilateral.
Peg-shaped crown:This is a common alteration in the maxillary lateral incisor.
44156
Dental AnatomyA mandibular primate space is usually found in the primary dentition between canine and first molar